home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Collection of Education
/
collectionofeducationcarat1997.iso
/
SCIENCE
/
H_PROG12.ZIP
/
EXCEL.TXT
< prev
next >
Wrap
Text File
|
1995-03-09
|
5KB
|
107 lines
EXCEL.TXT
This is the description file for the demonstration files
provided with H_PROG.
EXCEL demonstration files on the disk
APPS1.XLA 'Creates a menu that calls the other sheets
CA_CALIB.XLT 'Template for Calibration work sheet
CA_CALC.XLT 'Template for Calculation work sheet
CA_PASTE.XLM 'Macro sheet that supports the data import function
These files work with MS EXCEL versions 3,4 and 5 although APPS1.XLA
requires 5.0 to be set to Version 4.0 menus to work properly.
APPS1.XLA creates a menu which is added to the standard EXCEL menus.
The Applications menu is paced next to the edit menu on the menu bar and
has 5 sub menus.
Calcium measurement: This activates both the calibration and calculation
templates, and places them ready for data input with the calibration file
active. At present the calculation sheets are set up for experiments of
3 minutes duration.
New Sheet: Starts a new copy of the calculation sheet, useful if you
have several sets of data with the same calibration file.
Paste Kd▀ Values: Pastes calculated KdB values from the calibration sheet
to the active calculation worksheet.
Import Data: copies data from the CSV files created by H_PROG into
the approprate work sheets.
Remove menu: this removes the application menu.
MACRO KEYS:
Ctrl+V pastes data only (like using Paste Special Values only faster)
Ctrl+Shift+P copies and pastes Kd▀ values from the calibration sheet
to the calculation sheet
Ctrl+O opens the calibration data files
Ctrl+H opens data files then copies and inserts ratio data into the
indicated area on the sheet.
PERFORMING CALCULATIONS
If you wish to use the APPS1.XLA menus, copy all the above files into the
the subdirectory excel\xlstart. When you start EXCEL the menu will
automatically load. If you wish to use the templates alone, they
can be stored anywhere. However the XLM file MUST be loaded for the
calculation and calibration files to work. Currently the XLM file
assumes the data files are on a disk in drive A.
To use the example sheets either choose the calcium measurement option
from the applications menu, or open CA_PASTE.XLM, CA_CALC.XLT and
CA_CALIB.XLT. When the files have loaded make sure the Calibration file
is the active file.
All the files have color coded input areas to guide you. Yellow and green
indicate data input areas.
Use Ctrl+O or the menu item to open your data file(s) with calibration data.
When you have opened the appropriate file(s), you must manually find Rmin
and Rmax (I am still working on a program to do this), and copy them to the
appropriate columns in the calibration work sheet. I use 20 secs of data
from the plateau regions after adding digitonin for 2 min followed by 1 mM
EGTA for 2 min. (I do this on the same batch of suspended cells, but
similar principles apply for BCECF or SBFI, where calibration curves are
used). The you have to copy the equivalent regions from the 380 nm data
(the WL2 column in the CSV file). You need both of these sets of data to
provide the correction factor (the ▀ of the Kd▀) as well as the Rmin and
Rmax. (see equation 5 of Grynkiewicz et al., J.Biol.Chem. 1985, 260: 3440-
3450 for details).
Once you have Rmin, Rmax and Kd▀, you can then copy and paste them manually
to the calculation sheet (Ctrl+V is handy for just pasting values) or use
the Ctrl+Shift+P hot key or the menu item. You should NOT save the
calibration sheet OR the calculation worksheet before doing this as the
macro loses the name of the sheets and you will get an error message.
With the calibration data in the calculation worksheet, move the active cell
(that little rectangle) to the first cell in the data input region, then
press Ctrl+O. This calls up a file selection box so you can pick the data
file. The program currently assumes that the data files are on a disk in
drive A. Once you pick the file, it automatically extracts the data from it
and pastes it in the column, the spreadsheet then automatically calculates
[Ca2+]i. Continue on for the rest of the data. When the data entry is
finished. Press F5 (GoTo) and select the name A_data, this takes you
to the summary data. Press F5 again and select the name Agraph. This takes
you to the automatic graph of the data. Printing the worksheet will print
the summary sheet only, unless you redefine the print range. You not only
have to select the graph, but also have to enter Graph edit mode to be
able to print it.
CHANGING THE FILES
Feel free to alter these files for your own use. You have to unhide
the XLM file to work on it. To edit the XLT files
you have to hold down the shift key when opening them. To edit the
XLA file you first have to hold down the shift key when opening it,
THEN unhide it. You REALLY have to read the EXCEL manuals to work
out what to do next though, as they are moderatly complicated macros
(well, OK, changing the drive specifier in the XLM file is trivial
the other bits are a bit tricky).